Means for removal of smoke from coke ovens



Dec. 23, 1930., 1 I J. VAN ACKEREN 1,785,748

MEANS FOR REMOVAL OF SMOKE FROM COKE OVENS Filed June 27, 1925 2 Sheets-Sheet l I INVEN 0R. m M141 WM/w CHM a,

A TTORNEYS.

Dec. 23-, T930.

J. AN ACKEREN 1,785,748

Filed Julie 27, 1925 2 Shdets-$heet 2 Patented Dec. I 2 3, I930 "UNITED. STATES PATENT OFFICE JOSEPH VAN ACKEREN, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO THE KOIPERS COMPANY, OI PITTSBURGH, PENNSYLVANIA,'A CORPORATION OF PENNSYLVANIA MEANS FOR REMOVAL OF SMOKE FROM COKE OVENS Application filed June 27; 1925. Serial No. 40,067.

and methods for expeditiously charging coke ovens such, forinstance, as those disclosed in patents to Koppers-8l8,033, April 17-, 1906, and Becker-4,374,546, April 12, 1921,

- or similar constructions. with the elimination of the smoke nuisance during the charging operation.

In charging heat treating devices of the character indicated where a relatively long and narrow oven is em loyed provided with a plurality of feed openings distributed along its top and smoke and gas ofitakesat its ends the charges descending through the feed openings temporarily form, as it were, walls or curtains across the top of the oven interfering with the free flow of the gas generated by the coking operation and the smoke resulting from the charging operation, the gas and smoke collecting in the pockets between the successive feed openings and tending to blow out therethrough, vitiatingthe atmosphere to such a degreevas frequently to fall under the ban of local regulations. Where pipes are passed through the oven top into the pockets to take ofi the smoke externally of the oven an elaborates stem of pipes and bends is necessitated and t e raising and lowerin'giof the pipes and connectingand disconnecting them involve many difliculties. Moreover, the pipes are liable to burn out and explosipns are liable to occur. The pipes also become fouled by carbon and other deposits. Moreover, the external system, by reason of the length and bends 1n the piping necessitates the maintenance of a higher suction resulting in great friction losses moving the gases and smoke.

My invention contemplates, broadly, conin retrol of the gases within the hot ovens themselves without the necessity of using cumbersome external mechan sm of any character and without the use of metal pipes or other parts liable to be burnt out. This I accomplish by providi a path of flow along the top of the oven an preferably in a substantially straight line past or through-the curtain of material descending through the feed openings during the charging operation, thus also obviating any substantial resistance to flow and friction losses incident to the taking 01f of thesmoke through devious paths. this pathway further lies throughout in brickwork and is therefore not subject to burning out by the oven heat.

Important features of my invention, in its more specific aspect, comprise a bridge member made preferably of refractory material and preferably located across the bottom of the feed opening longitudinally of the oven, the bridge being provided preferably on its under side and longitudinally thereof with a tunnel or gas passageway open at the bottom and extending along the top of the oven to points beyond the angle of repose of the material fed through the feed openin The feed openin itself is preferably bellied out around the %ridge member so as to preserve .its cross-sectional area. The bridge provides In addition to the general features and objects of the invention above recited, the invention has such other improvements and advantages in construction and operation as are found to obtain in the structure and devices hereinafter described or claimed.

In the accompanying drawings, forming a part ofthis specification, and showing forpurposes of exemplification, a preferred form and manner in which the invention may be embodied or practiced, but without limiting the claimed invention specifically to such illustrative instance or instances:

Figure 1 is a cross-section of the battery on the line 1 1 of Fig. 2, showing the bridge member in longitudinal section.

Fig. 2 is a section taken longitudinally-of the battery on the li'ne'2- 2 of Fig. 1, showing the brldge members oftwo' adjacent oven chambersin transverse section, v i

Fig. 3 is an enlarged detail view taken on line 33 ofFig. 4, showing a feed opening and bridge in transverse section,

Fig. 4 is an enlarged detail of the feed openongitudinal section taken 3 ing and bridge in on the line 4-'4 of Fig. 3, and

Fig. 5 is an enlarged detail in horizontal section of the feed opening and bridge taken on the line 5-5 of Fig. 4. I

The same characters ofreference indicate the sameparts in each of the several views of the drawings. a

Referring to Fig. 1 there is shown the top '0 1 of a coke oven having a coking chamber 2. Feed openings 3are provided in the top through which the fuel is fed into the oven and at the ends smoke and gas ofitakes 4 are located. Located at the lower end of each 2'3 feed opening is a bridgemember 10spanning said 0 ening longitudinally of the oven and provi ed on its under side and longitudinally thereof withatunnel or passageway 11' extending to points on the respective sides of so the opening beyond the angle of repose of the material fed through said opening, suchv angle of repose being indicated in Fig. 1 by the. dotted lines 12. The bridge member is v I preferably made of. refractor material and may'conveniently be'compose of bricks similar to those employed in the top walk-being;

preferably built integral therewith. It is also preferabl provided with side lugs or extensions 14 tween its central ort1on.'and-.the

constitute a brace for itself. The bridge member is also preferably provided with cleanout o ifnings normally closed by the plugs 15 w of the feed opening. The feed opemn is belliedout' at 16 around said brid e'melfn r and is elongated at its bottom as s own at 17 to maintain or increase its cross-sectional area for'ming curtains or walls of material across I the oven andcausingthe smoke incident tothe charging-operation together with the gases contemporaneously generated in: the oven to accumulate in t e pockets lying between the lines of repose 12. The smoke and gas which normally would be trapped and respective side walls of the eed opening to ich may be. removed'through the top end.

chamber-the materia other sta'ntially as speci ed.

would force their way out through the feed openings are by my invention conveyed by. the passageways 11 in the-bridge members '10, in substantial alignment with the top of the oven, through the. curtains of descending materialand' hence along the top of the oven to the gas and smokeofitakes' 4 from which they are led to appropriate separating mecha nism or are otherwisedisposed of at a point remote from .the oven, all interference with the charging operation that. would otherwise result from blowingout through the feed openings being successfully obviated.

Due to the-position of the bridge members in the upper hot parts of the oven there is littletendency for the accumulation of carbon or other deposits in the bridging passageways but such accumulation as may exlst is readily burned out by subjecting the passageways to the burning action of hot-air passed through the oven after it has been emptied b the pusher and this action may be further. cilitated' if desired by removing the plugs 15 through the feed opening,

The invention as hereinabove set forth' is embodied in a particular form of'constru'ctlon'but may be variously embodied within the scopeof the claims hereinafter made.

I claim: 1'. In coke ovens, or the like, in combination; a heat treating chamber having awall ing to the chamber t e material to be heat.

providedwith a feecg1 opening for delivertreated and havin moke or gas pockets 'on opposite sides 0 said opening'that open into said chamber; and means bridgingsaid openin for conveying smoke andgases from one poc et to the other past a stream of material entering throu h said feed opening; substantially as speci ed.

2. In coke ovens, or the like, in combination: a heat treatin chamber having a wall forming a top for said chamber and provided with a feed opening for delivering to the to be heat treated and having smoke or gas pockets on op osite sides of said opening t at open into sal chamber; and means" bridgin said feed opening at its inner end and providing a path substantially in line with the top of the oven chamber. for

the smoke and gas fromone pocket to the East a stream, of material entering throng 3. The combination as defined in 1,

injwhich the bridging-means is composed of rEfEactory material; substantially as spec- 1 e 4, The combination as defined in claim. 1, and in which the wall provided'with a feed openingforms the roof of the oven and the top of said chamber and in which the bridging means is composed of'brickwork with its opposite ends mer ed in the ovenroof; subv .said'feed opening; substantially as specified.

a brace member supporting the brid ing means at a point intermediate the ends 0 the latter, said brace member being secured at one end to an oven wall; substantially as specified.

' 6. The combination as defined in claim 1, in which the bridging means is provided with a smoke and gas passageway extending .at

each end beyond the confines of said opening; substantially asspecified.-

7. The combination as defined by claim 2, in which the bridging means is providedwith a straight elongated smoke and gas passageway open on its under side and extending at each end beyond the confines of said opening; substantially as specified.

8. The combination as defined in claim 1, in .which the feed opening is countersunk around the bridging means to facilitate the feeding of material past said means; substantially as specified.

9. The combination as defined in claim 1, and in which, the wall provided with a feed opening forms a top for said chamber and in which the feed opening is elongated at its lower end in a direction transverse of said bridging means to facilitate the feeding of material past the bridging means; substantially as specified.

10. The combination as defined in claim 1, in which plugs are provided in the bridging means'removable to facilitate the cleaning out of carbon or other deposits; substantially as specified. I

11. In coke ovens, or the like, in combination: a heat treating chamber having a wall forming a top for said chamber and provided with a feed opening for delivering to the chamber the material to be heat treated and having smoke or gas pockets on opposite sides of said opening that open into said chamber;

said oven being provided with a central passagewayon substantially the level of the top of said chamber for by-passing smoke and gas from one pocket to the other through a stream of material entering through said feed opening; substantially as specified.

12. In coke ovens,.or the like, in combina .t'ion: a heat treating chamber having a wall forming a top for said. chamber and provided with a feed opening for delivering to the chamber the material tobe heat treated and having smoke or gas pockets on opposite sides of said opening that open into said chamber;

said oven being provided with a straight central passageway on substantially the level of the top of said chamber for by-passing smoke and gas from one pocket to the other through a stream of material entering through said feed opening; substantially as specified.

13. The combination as-defined in claim 11,

i in whichremova'ble plugs'positioned in the said central passageway between the feed opening andthe by-pass passageway are employed to facilitate, when removed, the clean-' latter, said bracing means extending on opposite sides-of said bridging means, the ends of saidbracing means remote from the bridging means being secured to the oven structure; substantially as specified.

15'. In coke ovens, or the like, in combination: a heat treating chamberhaving a wall provided vwith a feed opening therethrough and having smoke and gas pockets on opposite sides of said opening that open into said chamber; and a by-pass fdr smoke and gas within said feed opening adapted to convey said smoke and gas through said feed opening, and by-pass a stream of material fed through said opening, from one pocket to the other; substantially as specified.

16. In a horizontal coking retort oven'bat tery, in combination: a'coking chamber having a top wall forming the top of said chamber; heating walls therefor, on opposite sides of and contiguous to said coking chamber; gas ofitakes extending transversely through said top at opposite ends of said chamber respectively and communicably connected with said cokin chamber; said coking chamber having a p urality of fuelcharging openings extending through its top wall, the charging openings for said chamber being arranged between said gas 'ofitakes and spaced from each other and from said gas'ofi'takes; and bridging means disposed within each of said charging openings, each of said bridging means being arranged in the respective charging openings so as to provide a path within their respective openings for passage of gas from the top of the chamber on one side thereof to the to of the chamber on the opposite side thereo while fuel is within and is being fed therethrough and each of said bridging means being adapted to maintain fuel within or being fed through their respective charging 0 enin s out of the paths in said openings for ow 0? gas from one side to the other thereofl 17. In a horizontal eoking retort oven battery, in combination: a coking chamber havopposite ends. thereof and spaced from said gas ofitake; and bridging means disposed within the said charging opening for said chamber, said bridging means being so arand communicably connected with I chamber, said coking chamber e1 charging opening extending ranged Within the charging opening as to provide a path within said opening for passage of gas from the top ofthe chamber on fuel is Within or is being;l

one side of said opening to the top of'the chamber on the opposite side thereof While said opening, and being a apted to maintain 1 said fuel in said opening out of the path in said opening for flow of gas from one side to the othe; thereof. I

In testimony whereof, I have hereunto set my hand.

JOSEPH v m ACKEREN.

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charged through v 

